Preparation method of sorghum straw kaolin composite material for adsorbing tin ions in electroplating wastewater

A technology of sorghum straw and composite materials, applied in the direction of adsorption water/sewage treatment, metallurgical wastewater treatment, chemical instruments and methods, etc., can solve problems such as hazards

Active Publication Date: 2018-01-12
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"In addition, although copper and tin are essential trace elements for the human body, when the amount of copper and tin compounds in the environment increases, the amount of copper and tin entering the human body through the "food chain" will also increase greatly and cause harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Harvest sorghum stalks, wash them with tap water, and dry them.

[0016] Dissolve ammonium acetate, ammonia water, 1,3-propylenediamine, and ethylene glycol in deionized water, the concentration of ammonium acetate is 6g / L, the concentration of ammonia water is 6g / L, and the concentration of 1,3-propylenediamine is 3g / L , the concentration of ethylene glycol is 3g / L, and the ammoniated solution is obtained.

[0017] Put 50 g of washed sorghum stalks in 500 mL of ammoniated solution, place at 60° C. for 90 minutes, rinse and dry to obtain ammoniated sorghum stalks.

[0018] Acrylic acid and peracetic acid are dissolved in deionized water, the mass concentration of acrylic acid is 30%, and the mass concentration of peracetic acid is 0.1%, to obtain acrylic acid / peracetic acid mixed aqueous solution.

[0019] Put 100g of kaolin in 2000mL of acrylic acid / peracetic acid mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 12 hours, cool, wash with deionized wat...

Embodiment 2

[0024] Harvest sorghum stalks, wash them with tap water, and dry them.

[0025] Dissolve ammonium acetate, ammonia water, 1,3-propylenediamine, and ethylene glycol in deionized water, the concentration of ammonium acetate is 4g / L, the concentration of ammonia water is 5g / L, and the concentration of 1,3-propylenediamine is 5g / L , the concentration of ethylene glycol is 2g / L, and the ammoniated solution is obtained.

[0026] Put 100 g of washed sorghum stalks in 500 mL of ammoniated solution, place at 60° C. for 90 minutes, rinse and dry to obtain ammoniated sorghum stalks.

[0027] Dissolve acrylic acid and peracetic acid in deionized water, the mass concentration of acrylic acid is 25%, and the mass concentration of peracetic acid is 0.2%, to obtain acrylic acid / peracetic acid mixed aqueous solution.

[0028] Put 100g of kaolin in 1000mL of acrylic acid / peracetic acid mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 4 hours, cool, wash with deionized water, a...

Embodiment 3

[0033] Harvest sorghum stalks, wash them with tap water, and dry them.

[0034] Dissolve ammonium acetate, ammonia water, 1,3-propylenediamine, and ethylene glycol in deionized water, the concentration of ammonium acetate is 5g / L, the concentration of ammonia water is 4g / L, and the concentration of 1,3-propylenediamine is 4g / L , the concentration of ethylene glycol is 3g / L, and the ammoniated solution is obtained.

[0035] Put 10 g of washed sorghum stalks in 500 mL of ammoniated solution, place at 60° C. for 90 minutes, rinse and dry to obtain ammoniated sorghum stalks.

[0036] Dissolve acrylic acid and peracetic acid in deionized water, the mass concentration of acrylic acid is 28%, and the mass concentration of peracetic acid is 0.3%, to obtain acrylic acid / peracetic acid mixed aqueous solution.

[0037] Put 100g of kaolin in 1500mL of acrylic acid / peracetic acid mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 5 hours, cool, wash with deionized water, and ...

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Abstract

The invention belongs to the field of water treatment materials, and relates to a method for preparing a sorghum straw kaolin composite material that absorbs tin ions in electroplating wastewater. The preparation method proposed by the invention is to compound the modified kaolin into the pores of the ammoniated sorghum stalks, and the specific process includes cleaning the sorghum stalks, ammoniating, modifying the kaolin and preparing composite materials. Compared with sorghum straw, the composite material greatly increases the saturated adsorption capacity of tin ions, and can avoid the overflow pollution of sorghum straw organic carbon in the water treatment process. The composite material prepared by the invention increases the adsorption capacity of tin ions to 165.3 mg / g, can be used for treating tin-containing wastewater in electroplating plants, and has broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, and in particular relates to a method for preparing a sorghum straw kaolin composite material that absorbs tin ions in electroplating wastewater. Background technique [0002] The heavy metals most harmful to the environment and people in electroplating are lead, cadmium, chromium, and metalloid arsenic and their compounds. These are the key objects of investigation clearly stipulated by the Ministry of Environmental Protection in Huanfa [(2009) No. 112]. However, for electroplating practitioners and officials of provincial and municipal environmental protection bureaus, attention must also be paid to the harm to the environment and humans caused by tin compounds, nickel and nickel compounds, copper and copper compounds, zinc and zinc compounds used in electroplating. Because the book "Trace Elements and Health" published 30 years ago said: "At present, although there are only a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62C02F101/20C02F103/16
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV
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